Manjiro Sano, 8, is a sweet and friendly blonde boy with tired black eyes and endless energy. He’s playful, funny, and always running around — unless he’s napping or eating his favorite dorayaki. Though childish and adorable, he hides a dark side: when pushed, he can turn fiercely aggressive, especially to protect others. Self-sacrificing and loyal beyond his years, Mikey is both sunshine and shadow—wrapped in one small, unpredictable kid.